Improvement in base-buening fieeplaoe-stoves



I STUART &. BRIDGE.

Base Burning Fire Place Stove.

No. 79,275. Patented June 23, 1868.

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DAVID STUART AND LEWIS BRIDGE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNORS TO STUART, PETERSON, AND COMPANY, OF SAME PLACE.

Letters Patent No. 79,275, dated June 23, 1868.

IMPROVEMENT IN BASE-BURNING FIREPLACE-MOVES.

TO ALL WHOM IT MAY CONCERN:

Be it known that we, DAVID STUART and LEWIS BRIDGE, both of Philadelphia, State of Pennsylvania, have invented an Improved Fireplace-Stove; and we dov hereby declare the following to be a full, clear, and exact description of the same.

Our invention consists of a fireplace-stove, constructed in the peculiar manner fully described hercai ter, with the view of obtaining an extended heating-surface for the air admitted to the stove, which is of small dimensions, compared with ordinary stoves of this class. Other advantages, enumerated hereafter, are also attained by our invention.

In order to enabl'others skilled in the art to make and apply our invention, we will now proceed to describe its construction and operation, reference being had to the accompanying drawing, which forms a part of this specification, and in which- Figure 1 is a front view'o'f our improved fireplace-stove.

Figure 2, a vertical section on the line 1-2, fig. 1.

Figure'3, a sectional plan on the line 3-4, fig. 2.

Figure 4, a sectional plan on the line 5-6, fig. 2.

Figure 5, a sectional plan on the line 7-8, fig. 2.

Figure 6, a top view of the stove.

Figure 7, a view of the covers of the feeder.

Figure 8, a perspective view of the casing to fit in the fireplace and receive the stove; and

Figure 9, a diagram showing a front view of a fireplace-stove of the ordinary construction.

The base of the stove will be best observed by reference to figs. 1 and 3, in which A represents the lower plate, the latter being, in "the present instance, of an oval form, and to this plate are fitted the curved plates B, C, and D, the plates B and D being connected together at their ends by plates a a, in each of which is an opening, provided with a sliding door, shown by red lines.

The plate 0 is shorter than the other curved plates, and has two semicircular projeetio which is a partition, e, extending across the space between the plates B and C.

It may be stated, in the outset, that the products of combustion pass downwards into the semicircular pro jection d, into the flue E, between the plates 13 and C, thenco, in thedirection of the arrows, into and through the flue F, between the plates G and D, and thence into the flue G, to the semicircular projection d, as shown in fig. 3.

The upper edges of the plates B, C, D, and a a are fitted to the plate H, on which rests the casi the fire-chamber K, and the fire-pot J, and grate f.

At the rear of the casing I is a curved plate, M, secured to the said casing I at a: or, so as to form the. crescent-shaped air-chamber N, inwhich are two pipes, P and P, the former communicating with the interior of the semicircular projection d, and the latter with the semicircular projection 61, above referred to. This plate M is so perforated as to admit a plentiful supply of cold air to the chamber N.

To the upper edge of the casing I fitted the horizontal flange, h, of the casing Q, which is contained within an exterior casing, V, the latter being fitted to a plate, T, which rests on the curved plate M, but is so far ns, cl and d, between above theflange h of the casing Q as to leave a space, m, for the admission of air to the space W, between the casings Q and V.

At the rear of the casing V is a curved plate, R, which, with the said casing, encloses aspacc separated by a I ng I, enclosing a partition, at, into two compartments,k and It, with the former of which the fire-chamber communicates through a tube, 721. I

The partition 12, between the two compartments, has an opening provided with a throttle-valve, p, the spindle of which passes through a cover-plate, q, and is provided with an arm, t, to be opcrated by a rod, t, fig. 6. In this cover-plate, is an opening, 8, to which is-fitted the pipe for conveying the products of combustion from the compartment k to the chimney.

It should be stated here that, the pipe P communicates with the compartment 7:, and the pipe P with the compartment is, (sce fig. 5.) V

A plate, X, is fitted to the upper edges of the casings V and Q, this plate being of the form represented in fig. 6, so as to leave an opening, X, through which the air heated in the chamber. W, between the casings Q and V, can escape.

From the plate X is suspended the fuel-reservoir or feeder Y, which terminates below in the fire-chamber, this feeder having at the top an opening for the admission of fuel, which is passed through an opening in the plate X, above.

The cover consists of two disks, 2 and 3, the former being larger in diameter than the latter, and resting on the plate X, while the disk 3 rests on the top of the feeder, below the said plate. The two disks are loosely connected together by a central pin, 4, so that each dish will be certain to rest on its proper hearing.

The products of combustion can pass between these two covers-that is, between the top of the feeder and under side of the plate X-thus imparting heat, which would be lost if the feeder extended to the plate X, and a single cover only were used.

In fig. 5, the line 5 represents the face of a wall, against which bears the arched plate 6, figs. 1 and 8, and to the rear of this plate is secured a casing, L, composed of the side plates 7 7 and rear plate 8, the side plates meeting the top plate 9, which is made flat, as shown in the perspective view, fig. 8. I

This casing is fitted into the chimney-place L, made in the wall 5, and is the recess into which the stove projects. Through the top, 9, of this casing projects the pipe P, for conveying the products of combustion to the flue of the chimney, and in the top of thc plate 9, immediately above the opening X, fig. 6, is an opening, provided with a suitable damper, which may be so adjusted that the heated air can pass upwards into the passage which conveys the heated air to rooms above that in which the stove is situated, or the damper may be so closed that the heated air will be projected outwards into the room containing the stove. v 7

When the valvep is closed, the products of combustion. will pass from the fire-chamber through the opening m, fig. 5, into the compartment 7r, thence down the pipe P into the passage F, (fig. 3,) along the passage F into the passage G, thence through the pipe P into the compartment k, and thence to the chimney. On opening the valve 1), however, the products of combustion will pass directly from the chamber In thr'oughthe opening in the partition n into the chamber It, and thence to the chimney. I

The air admitted through the casing M, at the rear of the .stove, into the chamber N, is heated by intimate contact with the outer surfaces of these pipes P and P, and by contact with the back of the casing I, before it passes oif through the opening X.

, Another and independent volume of air is heated in the chamber W, having been admitted thereto through the opening, m, in front of the stove, the air thus heated meeting the other volume of air, and passing with the same through the said opening X.

On the top of that portion of the stove which projects into the room is a plate, H, made in the form of a section of a hollow sphere, the plate which rests on the top plate, X, of the stove, and against the wall 5, having openings for the passage of heated air into the room.

The main advantages of our improved stove will be most apparent by comparing it to the ordinary, wellknown fireplace-stove, of which a view, on a small scale, is shown in fig. 9.

In stoves of this classthere are two pipes, to w, one on each side of the main body of the stove, the products of combustion from which passdown one pipe and up the other to the chimney.

Owing to these external pipes, the stove occupies an extended space, and is frequently too large for an ordinary chimney-place, but by constructing a stove in the manner described, and by arranging the pipes for the passage of the products of combustion to the chimney within the stove itself, the latter may be made of a convenient size, and this without any loss of heat. Moreover, our improved stove can be arranged to project further into the room than ordinary fireplace-stoves, and, consequently, the room is more thoroughly heated than when the stove is moved far back into the fireplace.

Another advantage of our improvcd'stove is the situation of the pipep, for the escape of the products of combustion, this pipe being conveniently arranged for direct communication, without elbow-pipes, to the flue of the chimney.

In ordinary fireplace-stoves, it is usual to supply the feeder with fuel from the front, an arrangement which demands a short feeder.

By introducing the fuel through the top of the stove, a longer feeder may be used, and this long feeder enables us to form .an air-chamber, W, which greatly increases the'heating properties of the stove.

We claim as our invention, and desire to secure by Letters Patent- 1. The base of the stove, enclosing the passages E, F, and G, arranged and communicating with the pipes P and P, substantially as described.

2. Two or more pipes, P and P, arranged within the outer casing of a fireplace-stove, for conveying the products of combustion to the chimney, and tor heating the air admitted to the space within the said outer casing, all substantially as and for the purpose herein set forth.

3. The pipes P and P the same. 4

I 4. The double cover, consisting of the top of the feed-er, and so arranged t In testimony whereof, we have sig witnesses.

, in combination with the compartments 7: and 7c, and the valved partition botwdzn plates 2 and 3, one for fitting to the top of the stove and the other t bat the products of combustion can pass between them. ned uninames to this specification in the presence of two subscribing DAVID STUART, LEWIS BRIDGE. Witnesses:

JoIm WHITE, W. J. R. DELANY. 

